#include "comm.hpp"
#include <sys/wait.h>





static void getMessage(int fd)
{
    char buffer[SIZE];
    while (true)
    {
        memset(buffer, '\0', sizeof(buffer));
        ssize_t s = read(fd, buffer, sizeof(buffer - 1));
        if (s > 0)
        {
            cout << "[" << getpid() << "]" << "client say :>" << buffer << endl;
        }
        else if (s == 0)
        {
            // end of file
            cerr << "[" << getpid() << "]" << "read end of file, client quit, server quit too!!!" << endl;
            break;
        }
        else
        {
            // read error
            perror("read");
            break;
        }
    }
}





int main()
{
    // 1. 创建管道文件
    if (mkfifo(ipcPath.c_str(), MODE) < 0)
    {
        perror("mkfifo");
        exit(1);
    }


    Log("创建管道文件成功", Debug) << "step 1" << endl;


    // 2. 正常的文件操作
    int fd = open(ipcPath.c_str(), O_WRONLY);
    if (fd < 0)
    {
        perror("open");
        exit(2);   
    }

    Log("打开管道文件成功", Debug) << "step 2" << endl;


    int nums = 3;
    for (int i = 0; i < nums; ++i)
    {
        pid_t id = fork();
        if (id == 0)
        {
            // 3. 编写正常的通信代码
            getMessage(fd);
            exit(1);
        }
    }

    for (int i = 0; i < nums; ++i)
    {
        waitpid(-1, nullptr, 0);
    }

    // 4. 关闭文件
    close(fd);
    Log("关闭管道文件成功", Debug) << "step 3" << endl;

    unlink(ipcPath.c_str());
    Log("删除管道文件成功", Debug) << "step 4" << endl;


    return 0;
}